车轮是古代人类的伟大发明。车轮在轨道上行驶是对车轮应用的一大发展。而履带装置,一种在行进中随地铺设和随用随收的无限轨道,则是近代人类在地面机动方面跨出的又一大步。电视剧《雪豹》中周卫国击毁日军坦克,拆掉一个轮子后接止履带又继续行驶。你知道 The wheel is a great invention of ancient humanity. Wheel on the track is a major development of wheel applications. The crawler device, an infinite track that is laid and used along with it while on the move, is another major step taken by mankind over ground maneuvers. Zhou Weiguo in the drama “Snow Leopard” destroys the Japanese tanks, removes a wheel and catches the track and continues to drive. you know